公开(公告)号：US10408093B2

公开(公告)日：2019-09-10

申请号：US15874905

申请日：2018-01-19

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu ,  Haijun Ren ,  Hua Dong

IPC: F01L1/14 ,  F16H53/06 ,  F02M59/10 ,  F04B1/04

Abstract: A welded high-pressure fuel pump roller tappet, which is used for the fuel injection system in an engine, includes a guide sleeve, a U-shaped holder and a pin-shaft-roller set. Symmetrical positions on the upper portion of left and right sidewalls of the guide sleeve are provided with inflexed flanges. Two sides of the flange are folded inwardly to form a limiting slot. The U-shaped holder includes a bottom plate and side plates located on left and right sides of the bottom plate. Symmetrical positions on two side plates are provided with axle holes. The pin-shaft-roller set is set up between two side plates of the U-shaped holder. Symmetrical positions on the upper portion of the flange are provided with opening slots. After assembly, the U-shaped holder is located between two flanges. Two side plates are located inside the limiting slots in the flanges.

公开(公告)号：US10287930B2

公开(公告)日：2019-05-14

申请号：US15795253

申请日：2017-10-27

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu ,  Haijun Ren

IPC: F01L1/18

Abstract: This invention provides a novel lightweight rocker arm frame and a forming process of a curved crown part thereof, including two sidewalls and two bottom plates. The two sidewalls are connected through the bottom plates respectively located at two ends. A ball socket protruded upwards and an oil hole are arranged at a bottom plate at one end, and a bottom surface of a bottom plate at the other end is a bearing surface. A pin shaft hole is formed in the middle of each sidewall without the bottom plates. According to the rocker arm frame disclosed by the invention, the strength of the structure can be ensured while light weight is realized. The production efficiency of the rocker arm frame is effectively improved, and the structure of the valve rod supporting position is improved.

公开(公告)号：US09863382B2

公开(公告)日：2018-01-09

申请号：US15191543

申请日：2016-06-24

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu ,  Haijun Ren

IPC: F01L1/14 ,  F02M59/10 ,  F01L1/46 ,  F01L1/245

CPC classification number: F02M59/102 ,  F01L1/14 ,  F01L1/245 ,  F01L1/46 ,  F01L2105/00 ,  F01L2105/02 ,  F01L2109/00 ,  F04B1/0426

Abstract: A high-pressure oil pump roller tappet, used for automobile fuel injection system, mounted between the driving cam and the tappet. The roller tappet includes a shell, a holder, a roller, and a pin. Planes A are arranged on both sides of the seam on lateral sides of the shell. Holes I are arranged at symmetrical positions on two planes A. Holes II are arranged on symmetrical positions on vertical plates. The roller is located in the middle of the pin. Welding has no requirement on the thickness of the plate. The weight can be controlled effectively, reducing inertia force, friction, and wear, improving engine efficiency. The shell and holder are designed as being separate, ensuring that the shell subjects to lateral force as little as possible when the holder subjects to a force, such that the shell is less likely to vibrate. Thus, the shell avoids the abrasion.